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The ionization of two-active-electron systems by intense laser fields is investigated theoretically. In comparison with time-dependent Hartree-Fock and exact two electron simulation, we show that the ionization rate is overestimated in SAE…

Atomic Physics · Physics 2015-06-18 Zengxiu Zhao , Jianmin Yuan

The cross section for single K-shell ionization by a high-energy photon is evaluated in the next-to-leading order of the nonrelativistic perturbation theory with respect to the electron-electron interaction. The screening corrections are of…

Atomic Physics · Physics 2009-11-11 A. I. Mikhailov , A. V. Nefiodov , G. Plunien

We study the dynamics of charge-transfer insulators after photo-excitation using the three-band Emery model and a nonequilibrium extension of Hartree-Fock+EDMFT and GW+EDMFT. While the equilibrium properties are accurately reproduced by the…

Strongly Correlated Electrons · Physics 2019-12-18 Denis Golež , Lewin Boehnke , Martin Eckstein , Philipp Werner

The electron and ion properties observed in a photoionization inherit a symmetry properties of both a target and a radiation. Introducing a symmetry breaking in a photoionization process one can expect to observe a noticeable variation of…

Atomic Physics · Physics 2024-02-09 Maksim D. Kiselev , Elena V. Gryzlova , Alexei N. Grum-Grzhimailo

The angle-resolved inner-shell photoionization of R-trifluoromethyloxirane, C3H3F3O, is studied experimentally and theoretically. Thereby, we investigate the photoelectron circular dichroism (PECD) for nearly-symmetric O 1s and F 1s…

The semimicroscopic particle-hole dispersive optical model is adapted for a description of main properties of charge-exchange giant spin-multipole resonances in medium-heavy closed-shell parent nuclei. The adapted model is implemented to…

Nuclear Theory · Physics 2024-02-15 V. I. Bondarenko , M. Y. Urin

Strong-field photoelectron holography denotes the interference of various electron paths in laser-induced ionization of atoms, leading to interference patterns in the final momentum distribution. For a quantitative description of holography…

Atomic Physics · Physics 2019-08-28 Simon Brennecke , Manfred Lein

The spin-dependent localized Hartree-Fock (SLHF) density-functional approach is extended to the treatment of the inner-shell excited-state calculation of open-shell atomic systems. In this approach, the electron spin-orbitals in an…

Atomic Physics · Physics 2009-11-13 Zhongyuan Zhou , Shih-I Chu

Imaging in real time the complete dynamics of a process as fundamental as photoemission has long been out of reach due to the difficulty of combining attosecond temporal resolution with fine spectral and angular resolutions. Here, we…

Density functional theory (DFT) is used to rationalize magnetic parameters of hydrated electron trapped in alkaline glasses as observed using Electron Paramagnetic Resonance (EPR) and Electron Spin Echo Envelope Modulation (ESEEM)…

General Physics · Physics 2016-09-28 I. A. Shkrob

Single ionization of noble gas atoms by linearly polarized synchrotron radiation has been studied by employing angle- and energy-resolved photoelectron spectroscopy. The measurements were carried out in the plane defined by the momentum and…

Atomic Physics · Physics 2015-01-21 S. Ricz , T. Buhr , Á. Kövér , K. Holste , A. Borovik, , S. Schippers , D. Varga , A. Müller

We show that the degree of spin polarization of photoelectrons from the surface states of topological insulators is 100% if fully-polarized light is used as in typical photoemission measurements, and hence can be significantly "higher" than…

Mesoscale and Nanoscale Physics · Physics 2012-09-03 Cheol-Hwan Park , Steven G. Louie

Relativistic Hartree-Fock and random phase approximation methods for open shells are used to calculate ionization potentials and static scalar polarizabilities of eight superheavy elements with open $6d$-shell, which include Db, Sg, Bh, Hs,…

Atomic Physics · Physics 2016-04-06 V. A. Dzuba

A fourteen-fold anisotropy in the spin transport efficiency parallel and perpendicular to the charge transport is observed in a vertically-biased (Ga,Mn)As-based spin-polarized light emitting diode. The spin polarization is determined by…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 D. K. Young , E. Johnston-Halperin , D. D. Awschalom , Y. Ohno , H. Ohno

Most {\em ab initio} calculations on fullerene molecules have been carried out based on the paradigm of the H\"uckel model. This is consistent with the restricted nature of the independent-particle model underlying such calculations, even…

Chemical Physics · Physics 2015-06-22 Carlos A. Jiménez-Hoyos , R. Rodríguez-Guzmán , Gustavo E. Scuseria

SrCuO2 has long been considered a near-archetypal realization of a quasi one dimensional (1D) system of interacting electrons with short-range interactions. Within this framework, experimental observations - interpreted through the lens of…

Superconductivity · Physics 2025-10-20 Dimitar Pashov , Casey Eichstaedt , Swagata Acharya , Mark van Schilfgaarde

Spontaneous emission (SE) from a two-level atom in a photonic crystal (PC) with anisotropic one-band model is investigated using the fractional calculus. Analytically solving the kinetic equation in terms of the fractional exponential…

Other Condensed Matter · Physics 2015-05-13 Jing-Nuo Wu , Chih-Hsien Huang , Szu-Cheng Cheng , Wen-Feng Hsieh

Although quantum phase transitions involved with Anderson localization had been investigated for more than a half century, the role of spin polarization in these metal-insulator transitions has not been clearly addressed as a function of…

Disordered Systems and Neural Networks · Physics 2021-08-25 Kyung-Yong Park , Hyun-Jung Lee , Ki-Seok Kim

We show that opacity of a clean multilayer graphene flake depends on the helicity of the circular polarized electromagnetic radiation. The effect can be understood in terms of the pseudospin selection rules for the interband optical…

Mesoscale and Nanoscale Physics · Physics 2015-03-20 Maxim Trushin , John Schliemann

We investigate angular emission distributions of the 1s-photoelectrons of N$_2$ ionized by linearly polarized synchrotron radiation at $h \nu=40$ keV. As expected, nondipole contributions cause a very strong forward-backward asymmetry in…